[releng] Add version limit for NetworkManager

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f8bcb274a00eebf0c6c4f1cfc4579b5aeff000dd
Author: Michael Catanzaro <mcatanzaro posteo net>
Date:   Wed Oct 3 09:09:29 2018 +0000

    Add version limit for NetworkManager

 tools/smoketesting/tarball-conversion-stable.config | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tools/smoketesting/tarball-conversion-stable.config 
b/tools/smoketesting/tarball-conversion-stable.config
index 3d7875a..671329f 100644
--- a/tools/smoketesting/tarball-conversion-stable.config
+++ b/tools/smoketesting/tarball-conversion-stable.config
@@ -60,7 +60,7 @@
   <whitelist>
     ## EXTERNAL
     <package name="ModemManager"/>
-    <package name="NetworkManager"/>
+    <package name="NetworkManager" limit="1.15"/>
     <package name="PackageKit"/>
     <package name="accountsservice"/>
     <package name="appstream-glib"/>